Kotlinx.coroutines: How to test kotlin suspend function from spock

[mariusstaicu]

Hi,

I haven't found a way until now to unit test a suspend function using spock.
If anyone can shed some light on this please do so.
Thanks

[elizarov]

You can try calling your suspending function from runBlocking { ... } and then testing the result of that.

[mariusstaicu]

I cannot use runBlocking from spock, however this is a good idea. I could create a wrapper kotlin function with runBlocking{}. Thanks, I'll try.

[julianwki]

You could also mock that Continuation object, which kotlin is compiling into the method call. This code worked for me:

// mocked continuation
def continuation = Mock(Continuation) {
  getContext() >> Mock(CoroutineContext)
}

// method call which should be tested
subjectUnderTest.suspendableMethod(someParameter, continuation)